Improvement in carding-mach i n es



vried around and carded over.

UNITE STATES PATENT OFFICE. g

M. \V. OBENCHAIN, OF SPRINGFIELD, OHIC.

SMPROVEEVIENT lNCARDlNG-MACHINES.

Specification forming part of Letters Patent No. 4,642, dated July 20,1846 g antedated January 20, 1846.

To all whom t may concern:

Be it known that I, M. IV. OBENCHAIN, of Springfield, in the county ofClark and State of Ohio, have invented new and useful Improvements inMachines for Carding Vool; and I do hereby declare that the following isa full, clear, and exact description of the principle or character whichdistinguishes my invention from all other things before known, and ofthe manner of making, constructing, and using the same, reference beinghad to the accompanying drawings, making part of this specification, inwhich- Figure l is a longitudinal elevation, and Fig. 2 a longitudinalvertical section.

The same letters indicate like parts in both figures.

My first improvement consists in the employment of a second doffer abovethe usual doffer between the two main carding-cylinders to prevent thewool from accumulating on the single doffer heretofore used, and inemploying, in combination with these and between them, a stripper totransfer the wool from them to the second main cylinder.

My second improvement consists in the employment of two roll-dofferscovered with longitudinal strips of cards placed at equal distancesapart and so arranged and moved relatively to each other, the spacesbetween the cards being equal in width to the cards, that oneshallkbegin to doff as the other finishes.

In the carding-engines generally used for making rolls but one doft'eris used, andas its surface is covered with cards in longitudinal strips,each strip separated froml the others by vacant spaces of about the samewidth,

the doffer only removes the wool from the` carding-cylinder duringone-half of the time; hence therolls are lnade of wool unequally carded,for as the cylinder makes two or more revolutions while one of thestrips on the doffer passes it necessarily makes about the same numberof revolutions while one of the spaces passes, and as during this timethe wool is not stripped from the cards it is car- This difficulty isavoided in making continuous slivers by having the iilleting-cards onthe doer winding around, so that they strip continuously, and when twodoffers are used the filletingcards on one doffer correspond with thespaces between the cards on the other, each doffer taking off continuousslivers from the cylinder; but by this my first improvement I am enabledto make nearly double the quantity of rolls in the same space of timeand to take the Wool from the cylinder regularly.

In the accompanying drawings, A represents the frame of the machineproperly vcarding-cylinders, andthe space between these two doffers isoccupied bya stripper F, which takes the fibers from the two doifers andtransfers them to the second carding-cylinder, a portion of the fiberstaken from the first cylinder by the upper doffer E being transferred tothe second main cylinder by it and the rest by the stripper F. Thesedoffers may be covered with tilleting or sheet cards; but I prefer theformer.

Motion is communicated to the doifers Dv and E by bands a and h from ashaft cto pulleys CZ and c on the arbors of the doffers or in any otherdesired manner, and the stripperis driven by a band f from a shaft g,that communicates motion by a band h to the crankshaft z', that operatesthe combs in the usual manner. The upper and lower roll doffers G Il areof the same size and about forty inches in circumference with theirsurfaces provided with longitudinal fillet-cards of about four inches inwidth, the spaces between the fillet-cards being nearly ofthe samewidth. The iillets and spaces of these two rollers must be so arrangedrelatively to each other and the surface of the second carding-cylinderthat the fillets on the second doffer H will begin to take the fibersfrom the cylinderl when those on the first doffer G leave them, that theaction may be regular. Vith the view to insure this regularity of actionthe motions of the two doffers are connected by cogwheels 7c Z, of equaldiameters on their arbors, and both carried by an intermediate cogwheel,(represented by dotted lines,) which receives motion from the shaft ofthe second carding-cylinder by a band m over a pulley n on its arbor.

The two combs op are operated iu the usual manner by connecting-rods q`7' and cranks on shaft z', the cranks or comb 0 being opposite thecranks that operate the other comb p, so that one comb descends as theother ascends.

The cranks on one end of the shaft 1f only are represented in thedrawings.

What I claim as my invention, and desire to secure by Letters Patent, s-

l. The employment of the additional doffing-roller between the two maincarding-cylinders for the purpose of taking the fibers from the firstmain carding cylinder and transferring' them to the second with moreregularity than heretofore, as described.

2. In combination with this, the stripper, which works between the twodoiers and which transfers the fibers from them to the second maincarding-cylinder, as described.

3. The employment of two roll-doiers with longitudinal fillet-cardsarranged substantially as herein described, whereby a much greaternumber of rolls can be made in the same space of time and of betterquality than with the single doifer in consequence of the regular actionon the carding-cylinder.

M. XV. OBENCHAIN. lVitnesses:

JAMES LEFFEL, C. F. MCWIVLLIAMs.

